Heavy Truck Exhaust Systems

Replacing your old OE pipe can be expensive! Search Grand Rock's extensive inventory pf replacement parts and find the part you need for any major brand OE system. New truck, old truck or custom truck, We have what you need.
Click the links below to get started.

School Bus Exhaust Systems

Do you need to replace your exhaust system or repair a leak before inspection? Do you have an end of the school year maintenance project?
Grand Rock has an extensive line of bus exhaust parts, giving you the assurance you need that the parts will exceed your expectations and arrive when you need them.
Click the links below for a comprehensive list of stocked parts.
For even faster shipping select one of our many 2-piece school bus pipes and save!